BLOCK FOR FIREFLY HABITABLE WATER PASSAGE AND FIREFLY HABITABLE WATER PASSAGE USING THIS BLOCK

摘要

PROBLEM TO BE SOLVED: To provide a water surface and land contacting place of water flowing in a water passage, that is, a place having the shore so that a firefly can easily go and come between an underwater part and land.;SOLUTION: This block for a firefly habitable water passage has a bottom part and an opposed two side parts on the bottom part each having an inner surface; and has at least one opening arranged over the bottom part from a top part of the side part in at least one of the side part. The firefly habitable water passage has respectively the bottom part and the opposed two side parts on the bottom part, and uses a plurality of water passage blocks having at least one opening arranged over the bottom part from its top part in the side part. The bottom part exists under the ground surface, and the top part of the side part substantially exists on the ground surface, and a water level of the water flowing in the water passage exists within a range of the opening.;COPYRIGHT: (C)2007,JPO&INPIT